The Sonic Alert , model DB100 doorbell signaler is wireless and installs easily. It features a chime, 64 user-selectable channels to prevent interference from a neighbor's signalers and an outlet for a lamp. The DB100 is compatible with all Sonic Alert receivers. Five year warranty.
Features:
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Selectable number of flashes
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Different flash codes for front or back door
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Works with most home intercom systems with separate additional doorbell button sensor (sold separately)
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Built in chime (can be turned off)
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Built in outlet to flash attached lamp
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64 user-selectable channels
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Compatible with all Sonic Alert receivers
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12V battery (not included)